Sash-balance.



J. P. GAMBILL & P. M. woons.

SASH BALANCE.

APPLICATION FILED MAY 25,1910. I

982,04 v Patented 13111111911.

/ 2%; N f/ j i Inventor 4 I I I Attorneys Fig. 2 is an enlarged invention consists of ITED STATES OKLAHOMA, AND ONE-EIGHTH T0 THOMAS o. HAYS, or Y. DILLEY, or MUSKOGEE, WAURIKA, OKLAHOMA. I

SASH-BA LANCE.

Specification of Letters Patent.

Patented Jan. 17, 191 1.

Application filed May 25, 1910. Serial No. 563,315.

To all whom it may concern: I Be it known that We, JOHN F. GAMBILL and FRED M. lVooDs, citizensof the United States, residing at-Muskogee, in the county of Muskogee, State of Oklahoma, have invented a new'and useful Sash-Balance, of which the following is a specification. This invention relates to sash balances and one of its objects is to provide improved means whereby the balance or weight may be detachably connected to the said cord. Another object is to provide connecting means including a' sheave for movably engaging the sash cord, saidisheave being housed within the weight. a

YVith these and other objects in view the certain novel details of construction and combinations of parts hereinafter more fully described and pointed outin .the claim. c

In the accompanying drawings the preferred form of the 111VI1l310n has been shown.

In said .drawingsz Figure l is a view partly in front elevation and partly in sec: tion showing the present improvements applied to upper and. lower windowsashes. view-partly'in section and partly in elevation of the balance and its cordf', ,Fig. 3 is a detal view of the detachable sheave and its casing.

Referring to the figures by characters of reference A designates a window casing'having the usual weight box a, and B and C designate the upper and lower sashes respectively. Cord pulleys or sheaves 1 and 2 are arranged in the upper portion of the weight box a at each side of the casing, as ordinarily, each set of sheaves supporting a cord 3 one end of which is attached to the upper sash B while the other end thereof is attached to the lower sash C. The intermediati'. or folded portion of the cord is extended under a sheave 4L journaled within a I ()ppo'sitely disposed lapping curved wings 6 are formed at the lower end of the casing and cooperate to constitute a substantially tubular extension preferably formed of spring 'metal and which can be contracted to a limited extent.

. diameter of the weight and expands and friotionally narily,

. The counter balance 7 has a. slot 8 in the upper end thereof, the inner end of this slot being enlar ed and rounded as indicated at 9. The said slot extends throughout the the entire counterbalance can be readily cast. The sheave 4 is placed within theeounterbalance by first contracting the tubular extension 6 and then inserting the casing 5 and said extension into the slot 8, 'it being understood that. the extension moves into the enlarged inner end portion of the slot, and, when released, engages the wall of said enlarged portion so as to hold the v casing 5 against displacement relative to the counter-balance. The cord 3 can then be threaded through the casing and under the sheave 4 and then extended over the sheaves 1 and 2 and attached to the casings B and C as heretofore described. After a counterbalance has been arranged in each side of the window casing and connected to the two sashes in the-manner described, the said sashes can be raised and lowered as ordithe counterbalances' serving to hold them in any position to which they may be moved.

Various changes can be made in the construction and arrangement of the parts without departing from the spirit or sacrificing any of the advantages ofthe invention as defined in the appended claim. \Vhat is claimed-isz A' counterbalance including a weighthaving a slot in one end, said slot having an enlarged portion, a casing insertible 1nto the slot and having an integral expansible tubular extension frictio'nally engaging the walls of said enlarged portion of the slot, and a sheave journaled within the casing.

In testimony that we claim the foregoing as our own, we have hereto afliXed our signatures in the presence of two witnesses.

JOHN F. GAMBILL. FRED M. VOODS.

Witnesses:

CHAs. E. HAoER'rY, E. E; FARRIS. 

